Let's talk about lenses E mount and FE

How do you feel about FE lineup so far in terms of quality compared to APS-C lineup? Did Sony took a different approach this time for FE lenses (remember SEL16mm and SEL30 Macro in early days of NEX era - they received quite a lot of critique, so do you think Sony learned on mistakes)? Do you feel this time less will say that Sony lenses are not that great?

Also, what lenses except upcoming FE16-35 are necessary for minimum setup (of FE lens lineup) to be considered at least decent or doable lineup (considering FE is so young still and is growing) by most folks?

Lastly, I would really like to see Olympus to contribute in terms of its great optical experience to develop for FE lineup (or E mount in general) some of their magic style lenses like 135mm f2 or 200mm f2 or any zoom with mind blowing specs (all these lenses are just merely my speculations). Why Sigma or Tamron are not contributing to FE? Tamron haven't made a lens for Sony E-mount since 2011 or so. What's going on? Is it just Zeiss who has a burden to pull the plow?